Answer:
Step-by-step explanation:
does it have to be right?
E=Z*sqrt (p(1-p)/N), where E= error margin, p=proportion, N=sample size
Katrina's margin error at 85% confidence interval: E=1.96*sqrt (p(1-p)/100) = 0.196 sqrt (1(1-p))
Mathew's margin error at 99% confidence interval: E= 2.58*sqrt (p(1-p)/400) = 0.129 sqrt (p(1-p))
Since both obtained same estimate of proportion (that is, value of p), it can be seen that Mathew's estimate will have a small error (That is, 0.129 is smaller than 0.196). This can be attributed to larger sample size although a wider confidence (99%) interval was considered.
Answer:
x = 1
Step-by-step explanation:
In order to solve the given problem, we should have the knowledge of the following property.
- Measure of the tangents drawn from external points to a circle are equal.
46x - 1 = 45x
46 x - 45x = 1
x = 1
Answer:
y= -1/3x+5
Step-by-step explanation:
-1/3 is the slope (rise/run)
5 is the y-intercept
Answer:
v = 7
Step-by-step explanation:
Divide both sides by 4 to isolate v
28/4 = 4v/4
v = 7
